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https://issues.apache.org/jira/browse/SPARK-5533?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14310086#comment-14310086
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Sean Owen commented on SPARK-5533:
----------------------------------

As far as I can tell, Spark only directly uses the newer com.fasterxml classes. 
The org.codehaus.jackson deps you see in the build are really to harmonize the 
version used amongst dependencies like Hadoop. I think that much has to stay, 
but not because Spark uses it.

> Replace explicit dependency on org.codehaus.jackson
> ---------------------------------------------------
>
>                 Key: SPARK-5533
>                 URL: https://issues.apache.org/jira/browse/SPARK-5533
>             Project: Spark
>          Issue Type: Bug
>    Affects Versions: 1.3.0
>            Reporter: Andrew Or
>
> We should use the newer com.fasterxml.jackson, which we currently also 
> include and use as a dependency from Tachyon. Instead of having both versions 
> magically work, we should clean up the dependency structure to make sure we 
> only use one version of Jackson.



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